Here are the video materials from the Convention:

• Supreme Knight Carl Anderson's Message  (DVD ISO, 455 MB)
• The 4 Commercials (DVD ISO, 191 MB)
• Meet Life Video  (DVD ISO, 1.4 GB)

Note these are DVD videos saved as an ISO file for easy download.
After downloading, you can use your favorite DVD creation / burning program to create DVDs.
There are many good free DVD tools on the internet, use Google to review them.
I use ImgBurn (http://www.imgburn.com/), it's free and easy.  Note this is not a KofC endorsement, just my recommendation.